CVE•Published 2026-07-30•1 article on news•5 live references•NVD data
CVE-2026-58066
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
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Weaknesses (CWE)
Description
Rocket.Chat's SAML SSO before versions 8.7.0, 8.6.1, 8.5.2, 8.4.5, 8.3.7, 8.2.7, 8.1.7, 8.0.8, and 7.10.14 verified XML signatures but did not bind the validated signature to samlp:Response / saml:Assertion. An attacker could submit a wrapped document carrying forged identity attributes alongside any valid signature made by the trusted IdP certificate, and log in as an arbitrary user.
Timeline
Published 2026-07-30
Modified 2026-07-30
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-58066Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-58066Censys host search filtered to this CVE id.
grep.app
CVE-2026-58066Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-58066GitHub code search for direct mentions.
Google dork
"CVE-2026-58066" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.